/*
 * Copyright 2004 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Collections;
using Spring.Collections;
using NUnit.Framework;

namespace Spring.Objects.Factory.Config;

/// <summary>
/// Unit tests for the SetFactoryObject class.
/// </summary>
/// <author>Rick Evans</author>
[TestFixture]
public sealed class SetFactoryObjectTests
{
    [Test]
    public void SetTargetSetTypeToNonSetType()
    {
        SetFactoryObject lfo = new SetFactoryObject();
        Assert.Throws<ArgumentException>(() => lfo.TargetSetType = typeof(ICollection), "The Type passed to the TargetSetType property must implement the 'Spring.Collections.ISet' interface.");
    }

    [Test]
    public void SetTargetSetTypeToDerivedISetInterfaceType()
    {
        SetFactoryObject lfo = new SetFactoryObject();
        Assert.Throws<ArgumentException>(() => lfo.TargetSetType = typeof(IExtendedSet), "The Type passed to the TargetSetType property cannot be an interface; it must be a concrete class that implements the 'Spring.Collections.ISet' interface.");
    }

    [Test]
    public void SetTargetSetTypeToAbstractISetInterfaceType()
    {
        SetFactoryObject lfo = new SetFactoryObject();
        Assert.Throws<ArgumentException>(() => lfo.TargetSetType = typeof(AbstractSet), "The Type passed to the TargetSetType property cannot be abstract (MustInherit in VisualBasic.NET); it must be a concrete class that implements the 'Spring.Collections.ISet' interface.");
    }

    private interface IExtendedSet : ISet
    {
    }

    private abstract class AbstractSet : HybridSet
    {
    }

    [Test]
    public void SetTargetSetTypeToNull()
    {
        SetFactoryObject lfo = new SetFactoryObject();
        Assert.Throws<ArgumentNullException>(() => lfo.TargetSetType = null);
    }

    [Test]
    public void GetObjectWithoutSupplyingASourceSet()
    {
        SetFactoryObject lfo = new SetFactoryObject();
        lfo.IsSingleton = false;
        Assert.Throws<ArgumentException>(() => lfo.GetObject(), "The 'SourceSet' property cannot be null (Nothing in Visual Basic.NET).");
    }

    [Test]
    public void ObjectTypeReallyIsISet()
    {
        Assert.AreEqual(typeof(ISet), new SetFactoryObject().ObjectType);
    }
}
